Process and device for casting metals under an explosive-like pressure into molds.



H. TALLA.

PROCESS AND DEVICE FOR CASTING METALS UNDER AN EXPLOSIVE LIKE PRESSURE INTO MOLDS.

APPLICATION FILED OCT- 10; I9I6.

Patented Feb. 27, 1917.

HEINRICH TALLA, OF HEILIBRONN-ON-TI-IE-NECKAR, GERMANY, ASSIGNOR TO PRKGISIONSGUSSWERKE SYSTEM SGHMIDT-REICHHARDT G. M. B. H., 015 FRANKFORT-ON-THE-MAIN, GERMANY.

PROCESS AND DEVICE FOR CASTING Specification of Letters Patent.

METALS UNDER AN EXPLOSIVE-LIKE PRESSURE INTO MOLDS.

Patented Feb. 2'7, 1917.

Original application filed May 21, 1915, Serial No. 29,604. Divided and this application filed October 10,

1916. Serial No. 124,841.

To all whom it may concern:

Be it known that I, HEINRICH TALLA, a resident of Heilbronn-on-the-Neckar, Germany, have made an invention of certain new and useful Improvements in Processes and Devices for Casting Metals Under an Explosive-Like Pressure into Molds; and I do hereby declare that this invention is divided from my U. S. application Ser. No. 29,604, filed May 21, 19l5,"and that the following is a full, clear, and exact description of the same. I

Inv carrying out the present invention I make use of a casting device provided with a loading space lying in front of the moldand adapted to be shut off from the crucible, whereby the loading space is in open communication with the mold and serves itself as the space for producing the explo-.

The device for carrying out the process is represented in the drawing by way of example in a vertical longitudinal section.

The device comprises a melting furnace a of any appropriate construction with a crucible b for storing the metal. The crucible is directly connected to a loading space e. The space 6 is loaded for every single casting operation by a shut-ofl valve (Z secured to a spindle c. A lever 72. serves for operating the valve d.

For the purpose of loading the mold the space 6 has a channel f with 'a lip, adapted to communicate with a mold.

With the device shownin the drawing the space e lies'immediately under the crucible b; the explosive material is fed from the hopper on through the hollow spindle c of the valve 01 directly to the loading space e.

The ignition in the explosion chamber as well as the opening and closing of the molds may be obtained in a mechanical way and in due succession.

. The operation of the device is the followmg:

As soon as the metal in the crucible b has become sufliciently fluid, a certain part of it approximately corresponding to the capacity of the mold is, by lifting the lever 71,, allowed to run into the loading space 6. Then the slide n is rotated to feed a certain quantity of the explosive material to the loading space e. The explosive material is ignited by the liquid metal in the space 6. A special ignition device may thus be dispensed with.

The metal in the space 6 is forced quickly through the channel f into the mold, exactly filling all the hollow spaces of the same.

What I claim as my invention and desire to secure by United States Letters Patent, is:

1. A process for casting liquid metal or other melting materials into molds, consisting in filling a quantity of the metal into a loading space and in throwing said quantity of metal into the mold by the force of the, explosion of a solid explosive material said material being ignited in the loading space by the hot metal.

2. In a device for casting liquid metal and other melting materials into molds a melting furnace, a crucible arranged in said furnace, a loading space, a valve, said valve being. adapted to shut off said loading space from said crucible and having a hollow spindle, said spindle being adapted to convey explosive material to said loading space, a 

